ESP32 based webserver as replacement for the HC05/06 inside a MK-312BT.
Can join a WPA2 encrypted WLAN, or be it's own AP.
For now does the knobs, program, ramp and battery level.
Planned features:
- Ramp parameters.
- Other advanced parameters, like freq and width.
- Powerlevel.
- User program upload.
- MA ramp.
- Interaction recording / playback.
Requirements:
- ESP32 devboard. I recommend the "ESP32 mini", 2x2x10 pins. Like https://www.az-delivery.de/en/products/esp32-d1-mini, does get sold under different brands.
Levelshifter, 5V to 3.3V. Already part of the carrier board.Turns out levelshifting isn't needed, as there's already a voltage divider on the boxes TX line.- Arduino IDE with the ESP32 board package and the filesystem uploader (https://randomnerdtutorials.com/install-esp32-filesystem-uploader-arduino-ide/).
Howto:
- Flash the sketch.
- Flash the filesystem.
- Replace the BT module in the mk312.
Remember to levelshift RX if you aren't using the carrier board. - Connect to the new AP. SSID is the modules MAC address, pw is 12345678.
- Open http://192.168.4.1/config. Change the SSID if you want to continue AP mode, SSID and password to connect to a preexisting network. WARNING: For now AP mode will always use the default password of 12345678, as there is no easy other way to change a forgotten password.
- Open http://mk-312ws.local (or the respective new hostname if you changed it) and start zapping.